Development of MgB2-based bulk supermagnets

Michael Rudolf Koblischka, Alexander Wiederhold, Muralidhar Miryala, Kazuo Inoue, Thomas Hauet, Bruno Douine, Kevin Berger, Masato Murakami, Uwe Hartmann

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A series of disk-shaped, bulk MgB2 superconductors (sample diameter 20 mm, reaction temperatures ranging between 750 °C and 950 °C) was prepared to improve the performance for superconducting supermagnets. These samples were characterized by magnetic and electric measurements in fields up to 7 T and at various temperatures 10 K <T< 35 K. The irreversibility lines, the current densities, the resistance, and the achievable trapped fields were determined. To analyze the data, a scaling of the flux pinning forces, Fp = jc × B, was performed. The different scaling behavior of the samples prepared at low- and high-reaction temperatures is discussed, considering the achieved microstructures.

Original languageEnglish
Article number6971268
JournalIEEE Transactions on Magnetics
Volume50
Issue number11
DOIs
Publication statusPublished - 2014 Nov 1

Fingerprint

Electric variables measurement
Flux pinning
Magnetic variables measurement
Temperature
Superconducting materials
Current density
Microstructure

Keywords

  • Flux pinning forces
  • MgB
  • supermagnets
  • trapped fields

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Koblischka, M. R., Wiederhold, A., Miryala, M., Inoue, K., Hauet, T., Douine, B., ... Hartmann, U. (2014). Development of MgB2-based bulk supermagnets. IEEE Transactions on Magnetics, 50(11), [6971268]. https://doi.org/10.1109/TMAG.2014.2323995

Development of MgB2-based bulk supermagnets. / Koblischka, Michael Rudolf; Wiederhold, Alexander; Miryala, Muralidhar; Inoue, Kazuo; Hauet, Thomas; Douine, Bruno; Berger, Kevin; Murakami, Masato; Hartmann, Uwe.

In: IEEE Transactions on Magnetics, Vol. 50, No. 11, 6971268, 01.11.2014.

Research output: Contribution to journalArticle

Koblischka, MR, Wiederhold, A, Miryala, M, Inoue, K, Hauet, T, Douine, B, Berger, K, Murakami, M & Hartmann, U 2014, 'Development of MgB2-based bulk supermagnets', IEEE Transactions on Magnetics, vol. 50, no. 11, 6971268. https://doi.org/10.1109/TMAG.2014.2323995
Koblischka, Michael Rudolf ; Wiederhold, Alexander ; Miryala, Muralidhar ; Inoue, Kazuo ; Hauet, Thomas ; Douine, Bruno ; Berger, Kevin ; Murakami, Masato ; Hartmann, Uwe. / Development of MgB2-based bulk supermagnets. In: IEEE Transactions on Magnetics. 2014 ; Vol. 50, No. 11.
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